Fix file removal

This code used std::remove, which is a mechanism for removing characters
from strings.  Clearly it meant std::filesystem::remove(), which removes
files from the filesystem.

Correct it.

Change-Id: I030966203c1682a11c723c596accdf34637dd1ba
Signed-off-by: Ed Tanous <ed@tanous.net>
diff --git a/include/nbd_proxy.hpp b/include/nbd_proxy.hpp
index 838e7a1..9607ddf 100644
--- a/include/nbd_proxy.hpp
+++ b/include/nbd_proxy.hpp
@@ -63,8 +63,13 @@
         boost::system::error_code ec;
         peerSocket.close(ec);
 
-        BMCWEB_LOG_DEBUG("std::remove({})", socketId);
-        std::remove(socketId.c_str());
+        BMCWEB_LOG_DEBUG("std::filesystem::remove({})", socketId);
+        std::error_code ec2;
+        std::filesystem::remove(socketId.c_str(), ec2);
+        if (ec2)
+        {
+            BMCWEB_LOG_DEBUG("Failed to remove file, ignoring");
+        }
 
         crow::connections::systemBus->async_method_call(
             dbus::utility::logError, "xyz.openbmc_project.VirtualMedia", path,